Join Date: Mar 2004
Location: NYC, ROC, HNL, PEN, BKK, KUL, SIN (check out http://my.flightmemory.com/kkua)
Programs: DL Diamond charter member; 2 million miler (45% from NWA, 2MM achieved 5/2018)
Posts: 682
My easiest way to remember... fares in P stands for PREMIUM and F is just simply FULL. Hence, P will always be more expensive.